leinbach



(No Model.) 4 sheetssneem.

F. W. LBINBAGH, of. A. W-OLLB & E. H. BRUNNBR. Paper Bag Machine. l PaenhadJune 7,1881."

mph". wmingm. o4 c (No Medel.) 4 Sheets- Sheet 2.

F. W. LEINBAGH, C. A. WLLE 8v E. H. BRUNNER.

` Paper Bag Machine.

No. 242,661'. Patented June 7,1881.

N, Pneus, Pnowuuwmpm, wmxngwn, n. c.

(No Model.) l 4 Sheets-Sheet 3.

'E'. W. LEINB-AGH, C'. A. WOLLE & E. H. BRUNNER.

Paper Bag Maohie. l

No. 242,661. .Pafemedlune 7.11881.

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(No Model.) 4 Sheets-Sheet 4.

11W. LEINBACH, o. A. WoLLvBxv E. H. BRUNNER. Paper BagMaohine. l Y N o. 242,661. Patented June 7,1881.`

` UNITED STATES PATIENT OFFICE.

FELIX W. LEINBACH, CLARENCE A. WOLLE, AND EDVVARI) H. BRUNNER, OF BETHLEHEM, PENNSYLVANIA, ASSIGNORS TO CLARENCE A. WOLLE,

OF SAME PLACE. t

PAPER-BAG MACHINE.

SPECIFICATION forming part of Letters Patent No. 242,661, dated .Tune '7, 1881. Application filed October 4, 1880. (No model.)

To all whom 'it may concern Be it known that we,FEL1X W. LRINBACH, CLARENCE A. WoLLE, and EDWARD H. BRUN- NER, all citizens of the -United States, resid- 5 ing in Bethlehem, in the county of Northampton and State of Pennsylvania, have invented certain vImprovements in the Manufacture of' Paper-Bags and in Machinery therefor', of

. which the following is a specification.

1o `Our invention relates to a modified form of the machine for which Letters Patent No. 218,0? 6 were granted to our assignee on the 29th day of July, 1879, the main difference between the present machine and that patented being that, While in the patented machine the bags were made from plain tubes, in the new machine the bags are made from tubes having tucked-in sides.

The invention comprises certain features of zo construction and certain combinations of parts whereby a sheet of paper is first folded so as to form the tube with tucked-in sides, and this tube is then cut into lengths and formed into bags.

In the accompanying drawings, Figures 1 to 12, Sheet 1, are diagrams illustrating the successive operations in the manufacture of the bag; Fig. 13, Sheet 2, a side view of the complete machine; Fig. 14, a plan view of fthe 3o same; Fig. 15, Sheet 3, a longitudinal section of the machine; Fig. 15.12, a detached perspective view of part of Fig. 15; Figs. 16, 17, and 18, transverse sections of Fig. 14, on the' lines 1 2, 3 4,*and` 5 6, respectively; and Figs. 19

3 5 to 30, Sheet 4, detached views ot' dierent parts of the machine, illustrating the working of said parts.

We Will rst describe the successive steps in the manufacture of the `bag in connection 4o with those parts only of the machine which act directly upon the web or tube of paper of which the bag is formed, reference being had to Sheet 1 of the drawings.

The paper,.in the form of a web, X, of the proper Width, is first drawn through a former comprising an upper plate, a, a lower plate, b, and an intervening block, d, shaped as described hereinafter, whereby the web of paper, as it is drawn through the former, has first a 5o V-shaped tuck formed thereon, as shown in Fig. 1, .this V-shaped tuck being gradually flattened until it assumes the condition shown in Fig. 2, and the flattened tuck being then folded inward, as in Fig. 3, prior dto the bend ing of the opposite edges of the web ot paper inward beneath the plate b by means of iin gers e, one edge of the web overlapping the other, as shown in Fig. 4. During this folding operation the web of paper and the inner edges of the tucks are pressed against the plate b by 6o a roller, e', carried by spring-arms c2, so that the tensionon the paper caused by folding the edges is prevented from disturbing the tucks. One or both edges of the web of paper have been previously pasted by any of the means now employed in paper-bagmachines-by the roller shown in Fig. I, for instance-so that as the tube passes between the drawing-rolls the seam will be subjected to the necessary pressure and the tube with tucked-in sides com- 7o pleted.

It will be observed that the drawing-rolls and the pressure-roller c are reduced in diameter at the ends, so that the edges of the tube are not subjected to pressure and are not tlattened. The tubeis fed forward over atable, A, and as it traverses a transverse pressing-blade, B, acts upon the tube at some distance from the end of the same, such pressure (owing to the fact that the edges of the tube are not flat- 8o tened) causing the mouth of the tube to gape, so as to permit the free ent-rance of the distending-rod D, which moves in a direction contrary to that of the tube and blade B, as shown in Fig. 5. While these operations are being performed a pair of hinged and folded plates, f, having inclined ends, are thrust into each of the side tucks of the tube, as shown in said Fig. 5, and as the movements of the plate B and rod D continue the plates f are unfolded, 9o as shown in Fig. 6, this operation serving to form the internal triangular iiaps x, and to aid the distending-rod D in completing the primary fold of the bag-bottom, as in Fig. 7. The plates f are then withdrawn, the pressingblade elevated, and the distending -rod retracted, so that the tube having the primary fold on the end of the same is free to pass on until said primary fold occupies a position direct-ly over a yielding table, E, adapted to roo an opening in the table A, as shown in Fig.

8, said opening being of the proper size for the desired bag-bottom. A plate, F, to the under side of which paste has been applied, then descends, presses the primary fold of the tube against the plate E, and continuing to descend depresses said plate, thereby causing the unconfined iiaps y y' of the primary fold'to rise, as shown in Fig. 9, thus cornmencing the finishing-fold of the bottom. As the plate F descends it has a forward movement imparted to it, so as to insert the folded front edge of the tube beneath a pair of rollers, G G', as shown in Fig. 10, these rollers serving to draw the tube forward while the plate F is retracted and caused to ascend. As the plate ascends the front edge of the same applies paste to the under side of lthe ap y, and vibrating lingers H H act on the flap y', so as to fold the same beneath the plate F, as shown in Fig. 11, prior to the folding down of the flap y over said iap y', as shown in Fig. l2. The finishing-fold is now complete, and the proper pressure is applied to the same as the end of the tube passes between the rollers G G'. rlhe mechanism whereby the abovedescribed operations are effected is illustrated in Sheets 2, 3, and 4.

J J are the opposite side frames of the machine, which are furnished with suitable bearings for the rollers G G', and for three pairs of shafts, t' i', m m', and n n', the said shafts and the rollers being connected by suitable gearing, so as to revolve in the proper directions and at the proper rate of speed. rIhe side frames also have bearings for three transverse shafts, p, g, and s, the operations of which will be described hereinafter. rIhe shaftst' i', fm m', and n a' carry, respectively, rollers I I', M M', and N N', the rollers I I' and N N' being simple feed-rollers, but the rollers M M' being both feed and cuttin grollers, the upper roller, M, carryin g a transverse blade, and the lower roller, M', a transverse strip of rubber, cork, or like material, so that as the tube is fed forward by the rollers it will be cut into proper lengths to form bag-blanks.

As before described, the former, whereby the tube with tucked-in sides is made from a single web of paper, comprises plates a and b and an intervening block, d. The plate a is gradually widened from the inner to the outer end, and the plate b and block d are partly straight and partly flared, the block d being somewhat shorter than the plate b, and the plate a. shorter than the block d, as shown in Figs. 13, 14, and 15. At and near each edge the plate a has on the under side a rib, a', which is V-shaped at the outer end of the plate, as shown by Fig. 16, but gradually merges into the thin vertical rib shown in Fig. 17. The opposite edges of the block d are inclined at the outer end of said block, as shown in Fig. 16, and undercut at the inner end of the block, as shown in Fig. 18, the two portions merging into each other, so that the edges of the block, at or about the center ofthe same, are substantially vertical,

as shown in. Fig. 17. The` plate b has on its opposite edges flanges b', said flanges flaring outwardly at the outer end of the plate, as in Fig. 16, and projecting inwardly, as shown in Fig. 18, at the opposite end, the outwardlyflaring position of each flange merging gradually into the inwardly-projecting portion, as shown in Fig. 17. The edges of the block d and the iianges of the plate b thus form a recess corresponding in shape with the rib a.' of the platea, and, from thc point at which the plate a is discontinued, the edges of the block d and the fianges of the plate b correspond with each other until said flanges an block are discontinued. f

The pressing-plate B is carried by a pair of bars, c, one end of each of which is slotted and adapted to a guiding-pin on the adjacent side frame, J, the opposite end being acted upon by a cam, m2, on the shaft m', so that the elevation and depression of the plate at the proper intervals is effected. In order to effect the longitudinal reciprocation of the plate, each bar c is connected, by a link, c', to the upper end of an arm, p', on the shaft p, and a rock ing motion is imparted to the'la-tter by a cam, m3, on the shaft m', said cam acting through the medium of 'an arm, m4, pivoted to a stud on the frame, an arm, p2, on the shaft p, and a connecting-rod, p3.

To the under side of the plate B, near each end of the same, is pivoted an arm,f', the outer end of which carries one of the pairs of hinged plates j' before alluded to. The pivot-rods of the arms are bent at the lower ends, so as to form cranks f2, which are acted upon by camplates f3, and the arms f' are acted upon by coiled springsy, the tendency of which is to thrust said arms out-ward when the cranked ends of the pivot-rods are released from the control of the cams f3. Fingers t, having hooked ends, serveto fold and unfold the hinged plates j' as the latter are traversedin the manner shown in Figs. 19 to 26, Sheet 4, these views representing the movements of one pair of plates, j', and the operating devices therefor. In Figs. 19 and 20 the plate B has been depressed and is just about to commence its forward movement, the arm f' being extended and the plates f folded. As the plateB moves forward the cranked end f2 of the pivot-rod of the arm j" is acted upon by the cam-plate f3, so as to cause the inwardl movement of the end of the arm and of the folded plates fearried thereby, the forward movement bringing the plates j' under the control of the finger t, by which they are unfolded, as shown in Figs. 21 and 22. Further forward movement of the plate B effects the release of the cranked end of the pivot-rod of the arm f' from the controlof the cam f3, and the spring f4 then causes the arm j" to swing outward, as shown in Figs. 23 and 24. The plate B is now elevated and commences to move backward, when the hooked end of the nger t engages with the edge of the unfolded plate j' and causes the refolding of the same, as shown in'Figs. 25

IOC)

and 26. There is no inward movementof the plates f during the rearward movement of the plate B, owing to thel fact that the end ofthe pivot-rod of the arm f' is raised clearof the cam f3, and is not again brought intoline with the same until the plate B reaches the limit of its rearward `movement and is aga-in depressed.

The distemling-rod D is adapted to a groove in the feed-roll N, and the longitudinal reciprocation of said rod is eliectedby means of a bent arm, t, on the shaft q, a rockingimoton being impartedto the latter from the shaft 19 through the medium of arms c' c2 and a connecting-rod, v3. (See Figs. 13, 14, and 15.)

The plate-F is secured to a bar, F', which is hung to an arm,` w, on a transverse shaft, W, adapted to bearings in `brackets on the side frames, J, and having a rocking motion imparted to it from the shaft 'n through the medium of a crank, n2, an arm,w',and a connecting-reihen? A transverse bar, V, carries a slotted block, w3, which embraces the bar F', and serves as a guide and fnlcrum for the same, as (lr-scribed hereinafter, a spring, 104, tending to Akeep the bar F' in contact with said fulcrum-block during a certain portion of the movement of said bar.

S is apaste-trough, in which is a roller, S', the latter being rotated by means of a belt from a pulley on the shaft u.

The three positions of the plate F are illustrated in Figs. 27,28, and 29, Sheet 4. 0n reference to Fig. 27 it will be observed that when the arm 'w is at the limit of its movement in one direction the plate F is adjacent to the roller S'. As the arm w commences to move in the direction of the arrow the plate F is brought intocontact with the roller S' and receives paste therefrom,and as the movement of the arm continues said plate Fis moved downward and away from the roller S', this movement continuing until the bar F' is substantially vertical and bears against the fulcrum w3. (See Fig. 28.) Continued movement ot' the arm fw in the direction of the arrow imparts a downward and slight inward movement to the plate F until the arm 'w reaches the horizontal position but on continuing the movement beyond this the plate F will, owing to the bearin g ofthe bar F' on the fulcrum w3, have an outward thrust as well as a vertical movement, as shown in Fig. 29, the object of this movement being to effect the tucking of the fold of the bag-bottom between the rollers G G', as described in the first part of the speciiication.

The table A has guiding-strips z, whereby the bag-blank is properly directed to the plate F and table E, and the folding-arms H are inclined in respect to the surface of the table A, so as to insure a proper folding action on the liap y' ofthebag-bottom. The said arms H are carried by shafts adapted to inclined bearings on the under side of the table A, and each of said shafts has an arm, s', to a slot in which `is adapted the upper end of an arm, s2, on the shaft s, a rocking motion being imparted to the latter at the proper intervals v .by means of a crank-pin on the shaft '11,', said crank-pin being adapted to a segmental slot in au arm, s3, secured to the shaft e.' The segmental slotin the arm, in connection with` the Vcrank-pin, insures the necessary rapid vibration of the shaft 's1 and the proper dwell between said vibrations, owing to the lost motion 'of the pin in the slot.

it is essential that the bags shall be made rapidly and cheaply.

In carrying out our invention minor features of construction may be varied without departing from the general idea of the machine. For instance, the plat-e b and block dof the former may be made of one piece, suitably slotted and grooved,and the mode ofhangingand operating the side-foldin g plates f may be modified, and in some cases the devices for forming the tube with tucked-in sides may be independent ofthe devices for making the bag from the tube, said tube being fed from one machine to another. The construction shown,however, is preferred as being more compact and economical.

It will be observed in Fig. 14 that the opposite ends of the plate F have V-shaped notches `formed therein, so as to accommodate the triangular tiaps x, formed in making the primary t fold of the bottom.

We claim as our invention- -1.4 The mode herein described of making a tube with tucked-in sides, said mode consistingin pasting one or both edges of a longitudinall y-movin g sheet or web of paper, formin g vertical tucks in said web at proper distance apart, gradually attening and bending inward said tucks, and finally folding over and securing the edges of the web, all substantially as specified.

2. The combination, in a machine for making paper tubes or paper bags, of mechanism for longitudinally feeding a web or sheet of paper and pasting one or both edges of the same as it is so fed, a former constructed substantiall y as described, whereby vertical tucks are first formed in the web and then flattened and bent inward, and folding devices whereby the opposite edges of the web are caused to overlap each other and complete the tube, all substantially as specified.

3. The com bination,in apaper-bag machine, of devices for feeding a tube, a longitudinallymoving rod and plate for distending and folding back the mouth of the tube, and laterallymoving plates for spreading and folding the tucked-in sides of the tube, whereby the primary fold of the bag-bottom is formed, all substantiall y as specied.

4. The combination,in a paper-bag machine, of devices for feeding a tube, a rod and plate fordistending and longitudinally folding the mouth of the tube, side-folders for acting on IOO IOS

IIO

IZO

the tucked-in sides of the tube, a plate for transversely creasing the primary fold of the bottom', and folders for bending down and securing the flaps formed thereby, all substantially as specified.

ing-rod, two pairs of hinged plates, f, and

means whereby said plates are folded and unfolded and carried laterally from and toward the tube, all substantially as specified.

' 8. The combination of a pressing-plate, B, arms f', pivoted to said plate B, and hinged plates f, carried by said arms f', as set forth.

9. The hinged folding plat-es f, each having a beveled inner end, whereby, when the plates are unfolded, said inner ends are adapted to the internal triangular flaps formed in the bagbottom, all substantially as set forth.

10. The combination of the hinged plates fand their carriers with hooked rods t, for foldingan d unfolding said plates f, as set forth.

1l. rlhe combination of the pressing-plate B, and means` for reciprocating and for ele- .vating and depressing the same, the hinged plates f, thc pivoted arms f', carrying the same, the cranked rods f2, the cam-plates f3, and the springs f', as set forth.

12. The combination of the plate B, guided rods c, cams m2, links c', arms p', rock-shaft-p, and means for vibrating the latter, as set forth.

13. The combination of tube-feeding devices, -a table, A, having an opening therein, rolls G G', adjacent to said opening, a plate, F, and means whereby the plate is first moved vertically to crease the tube, and then longitudinally to tuck the fold between the rolls G G', as set forth.

14. The combination of a table having an opening therein, a paste trough and roller, a blade, F, and mechanism whereby a combined vibrating movement over the paste-roller and a vertical reciprocating movement through the opening areimparted to the said blade, as described.

15. The combination of the table A, having an opening therein, the yielding table E, the plate F, having a combined vertical and vibrating movement., the rollers G G', the pivoted folding arms H H, and means for operating said blade, rollers, and arms, as setforth.

16. The combination of the plate F and its bar F', the shaft W, having an arm, fw, to which said bar is hung, the fulcrum-block w3, the spring 104, and means for vibrating the shaft W, as set forth.

17. The combination of the pivoted folding arms H, the spindles of which have slotted arms s', the arms s2, adapted to the slots of the arms s', the rock-shaft s, having an arm, s3, with segmental slot, and the shaft a', having a crank-pin, n2, adapted to said segmental slot, as set forth.

18. The combination of the plate b of the tube-forming device, with the bending-fingers e beneath the plate, and the spring-pressure roller e above the same, whereby the tucks are confined and prevented from beingdrawn out by the action of' the lingers e in forming the fina-l folds of the tube, as specified.

In testimony whereof we have signed our names to this specification in the presence of twosubscribing witnesses.

FELIX W. LEINBACH. CLARENCE A. WOLLE. l EDWARD H. BRUNNER.

Witnesses:

FR. M. RAUCH, E. B. CHANDLER. 

